Biology 9700 · AS & A Level · The gas exchange system

The gas exchange system — practice question

Which tissue in the respiratory system is accurately matched to its function?

  • Acartilage - stretch and recoil to force air out
  • Bciliated epithelium - gives protection from suspended particles in the air
  • Celastic fibres - contract and relax to adjust diameter of bronchioles
  • Dsmooth muscle - keeps trachea and bronchi open

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